Valentine

Valentine is a wolf spawn egg that was released on Valentine's Day in 2018 (thread), and was only available with the /promo puppylove command, as it was not able to be purchased in Shopworld.

It functions just like a normal wolf, meaning that players who spawn the egg must spawn it in an enclosed area and tame it with bones. When spawned and eggified again, the egg will lose its Valentine's Day lore.